166198536 has 192 divisors, whose sum is σ = 542505600. Its totient is φ = 44964864.

The previous prime is 166198531. The next prime is 166198583. The reversal of 166198536 is 635891661.

166198536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 166198491 and 166198500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166198531) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1213060 + ... + 1213196.

It is an arithmetic number, because the mean of its divisors is an integer number (2825550).

Almost surely, 2^166198536 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 166198536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (271252800).

166198536 is an abundant number, since it is smaller than the sum of its proper divisors (376307064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166198536 is a wasteful number, since it uses less digits than its factorization.

166198536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 261 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 166198536 is about 12891.8011154377. The cubic root of 166198536 is about 549.8054805234.

The spelling of 166198536 in words is "one hundred sixty-six million, one hundred ninety-eight thousand, five hundred thirty-six".